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TUOLUMNE RIVER - HETCH HETCHY RESERVOIR (HETC1)
Latitude:
37.95º N
Longitude:
119.79º W
Elevation:
3870 Feet
Location: Tuolumne County in CA
River Group: San Joaquin
Issuance Time: Jul 03 2025 at 8:37 AM PDT
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.

Flow data on this product are unregulated / full natural flow.
2025 Water Year Trend Plot
Tabular View  |  Select a Different Water Year:  
Note: The chart below functions better in landscape orientation.

Location Photographs

ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ323)
Today: Sunny. Highs 55 to 69. Southwest winds 5 to 15 mph with gusts to around 35 mph.

Tonight: Clear. Lows 35 to 49. Southwest winds up to 10 mph with gusts to around 30 mph shifting to the southeast after midnight.

Saturday: Warmer, sunny. Highs 61 to 73. Southwest winds up to 10 mph.

Saturday Night: Clear. Lows 39 to 53. West winds up to 10 mph shifting to the northeast after midnight.

Sunday: Sunny. Highs 64 to 76. East winds up to 10 mph shifting to the southwest in the afternoon.

Sunday Night through Wednesday: Clear. Lows 41 to 57. Highs 65 to 81.

Wednesday Night: Mostly clear. Lows 45 to 59.

Thursday: Sunny. Highs 70 to 84.